Vacuum Decay in a Nutshell

“What if our universe comes with a self-destruct button to eliminate itself so cleanly and efficiently that every single physical thing would just stop existing and life would be impossible forever?” That self-destruct button is vacuum decay, a theoretical understanding of quantum mechanics that’s

So why is it called vacuum decay? As the video explains, “This has nothing to do with vacuum in space. It’s just called this way because scientists are bad at naming things.”